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| author | Randall Spangler <rspangler@chromium.org> | 2012-03-12 18:25:37 -0700 |
|---|---|---|
| committer | Randall Spangler <rspangler@chromium.org> | 2012-03-12 18:25:37 -0700 |
| commit | dcb1d1f9299fb6d78814a072114c2eab0f7d3198 (patch) | |
| tree | 0a08f91fcfabdae23e069b00ad0a5ebb032af206 | |
| parent | 186deea4c4388d0d019ae12b849ae1341dffe9fc (diff) | |
| download | chrome-ec-dcb1d1f9299fb6d78814a072114c2eab0f7d3198.tar.gz | |
Add x86 reset support
(new method, and x86reset command to call it)
Signed-off-by: Randall Spangler <rspangler@chromium.org>
BUG=chrome-os-partner:8460
TEST=manual: powerbtn, wait for system to boot, x86reset
Change-Id: Iad3f5c268b334e8d0ec1adfa2878f9e9d5927b9f
| -rw-r--r-- | common/x86_power.c | 22 | ||||
| -rw-r--r-- | include/x86_power.h | 3 |
2 files changed, 25 insertions, 0 deletions
diff --git a/common/x86_power.c b/common/x86_power.c index 4435142fcd..8a9664932c 100644 --- a/common/x86_power.c +++ b/common/x86_power.c @@ -173,6 +173,19 @@ void x86_power_force_shutdown(void) /* TODO: crosbug.com/p/8242 - real implementation */ } + +void x86_power_reset(void) +{ + /* Ignore if RCINn is already low */ + if (gpio_get_level(GPIO_PCH_RCINn) == 0) + return; + + /* Pulse must be at least 16 PCI clocks long = 500ns */ + gpio_set_level(GPIO_PCH_RCINn, 0); + udelay(10); + gpio_set_level(GPIO_PCH_RCINn, 1); +} + /*****************************************************************************/ /* Chipset interface */ @@ -414,3 +427,12 @@ static int command_x86power(int argc, char **argv) return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(x86power, command_x86power); + + +static int command_x86reset(int argc, char **argv) +{ + /* Force the x86 to reset */ + x86_power_reset(); + return EC_SUCCESS; +} +DECLARE_CONSOLE_COMMAND(x86reset, command_x86reset); diff --git a/include/x86_power.h b/include/x86_power.h index 41191b4d3f..a093798c50 100644 --- a/include/x86_power.h +++ b/include/x86_power.h @@ -25,4 +25,7 @@ void x86_power_cpu_overheated(int too_hot); * intended for use when the system is too hot or battery power is critical. */ void x86_power_force_shutdown(void); +/* Pulse the reset line to the x86. */ +void x86_power_reset(void); + #endif /* __CROS_EC_X86_POWER_H */ |